38666745 has 48 divisors (see below), whose sum is σ = 72810192. Its totient is φ = 18869760.

The previous prime is 38666723. The next prime is 38666777. The reversal of 38666745 is 54766683.

It can be written as a sum of positive squares in 8 ways, for example, as 17239104 + 21427641 = 4152^2 + 4629^2 .

It is not a de Polignac number, because 38666745 - 2¹⁰ = 38665721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38666745.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91635 + ... + 92055.

It is an arithmetic number, because the mean of its divisors is an integer number (1516879).

Almost surely, 2^38666745 is an apocalyptic number.

It is an amenable number.

38666745 is a deficient number, since it is larger than the sum of its proper divisors (34143447).

38666745 is a wasteful number, since it uses less digits than its factorization.

38666745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602 (or 599 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 38666745 is about 6218.2590007172. The cubic root of 38666745 is about 338.1524498154.

The spelling of 38666745 in words is "thirty-eight million, six hundred sixty-six thousand, seven hundred forty-five".